value quality siderealorsynodic author ref method 3.7710 3 Synodic Benishek 2022MPBu...49...38B Lightcurve 3.7718 3 Synodic Behrend LCDB Lightcurve 3.7740 3 Synodic Menke 2008MPBu...35..155M Lightcurve